to assist him, he denies this. reporting live, rob roth, ktvu channel 2 news. pink floyd's dark side of the moon is one of 25 recordings being preserved by the library of congress. [ music playing ] >> dark side of the moon spent more weeks than any other on the national album chart and going into the national recording registry. they are being singled out for their importance. other music includes cheap thrills, sounds of silence, the twist and saturday night fever. gay marriage may be good for marriage, the support doctors are making for the cause and the science they say they have to back it up. [ teen ] times are good, aren't they, kids?